Site-diluted antiferromagnet in a uniform field

Suzana M. Oliveira, P.M. Oliveira and M.A. Continentino

Physica A: Statistical Mechanics and its Applications, 1988, vol. 152, issue 3, 477-493

Abstract: We study a site-diluted Ising antiferromagnet in a square lattice, in an external uniform field (DAFF). We use a real space renormalization group technique to obtain the phase diagram as a function of temperature (T), concentration of magnetic ions (p) and magnetic field (H). At zero temperature the phase diagram, in the H × T plane, has a steplike structure separating the disordered from the ordered antiferromagnetic phase. We also discuss the connection between this problem and that of a ferromagnet in a random field.

Date: 1988
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:152:y:1988:i:3:p:477-493

DOI: 10.1016/0378-4371(88)90202-6

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